additional sensitivity tests: Topics by Science. govAccording to the Energy Strategy of Russia for the Period until 2030, the oil-refining ratio gradually increases; as a result, the fraction of straight-run fuel oil in heavy fuel oils consistently decreases, which leads to the worsening of performance characteristics of fuel oil

ii sensitivity tests: Topics by Science. govSeismic reflection, whose measured signal is the artificial seismic waves ,is the most effective method and widely used in the geophysical prospecting And this method can be used for exploration of oil, gas and coal